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122 lines
3.2 KiB
122 lines
3.2 KiB
/*
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* Copyright (C) 2022 jimj316
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package moe.nekojimi.chords;
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import com.amihaiemil.eoyaml.Yaml;
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import com.amihaiemil.eoyaml.YamlMapping;
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import com.amihaiemil.eoyaml.YamlSequence;
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import com.amihaiemil.eoyaml.YamlSequenceBuilder;
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import java.net.MalformedURLException;
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import java.util.*;
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import java.util.function.Consumer;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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*
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* @author jimj316
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*/
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public class Playlist implements Consumer<Song>
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{
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private static final int SHUFFLE_DONT_REPEAT_LAST = 3;
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private final String name;
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private final List<Song> songs = new ArrayList<>();
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private final LinkedList<Song> playHistory = new LinkedList<>();
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public Playlist(String name)
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{
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this.name = name;
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}
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public YamlMapping toYaml()
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{
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YamlSequenceBuilder songList = Yaml.createYamlSequenceBuilder();
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for (Song song : songs)
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songList = songList.add(song.toYaml());
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return Yaml.createYamlMappingBuilder()
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.add("name", name)
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.add("songs", songList.build())
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.build();
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}
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public static Playlist fromYaml(YamlMapping yaml)
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{
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Playlist ret = new Playlist(yaml.string("name"));
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YamlSequence songList = yaml.value("songs").asSequence();
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for (int i = 0; i < songList.size(); i++)
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{
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try
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{
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ret.addSong(Song.fromYaml(songList.yamlMapping(i)));
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} catch (MalformedURLException ex)
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{
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Logger.getLogger(Playlist.class.getName()).log(Level.SEVERE, null, ex);
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}
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}
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return ret;
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}
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public void addSong(Song song)
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{
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song.setKept(true);
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songs.add(song);
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}
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public String getName()
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{
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return name;
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}
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public List<Song> getSongs()
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{
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return songs;
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}
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public Song getNextSong()
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{
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Song ret;
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// copy the song list
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List<Song> toShuffle = new LinkedList<>(songs);
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// remove play history from candidates, latest first, unless we'd have less than 2 options
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for (int i = playHistory.size() - 1; i >= 0; i--)
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{
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if (toShuffle.size() <= 2)
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break;
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toShuffle.remove(playHistory.get(i));
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}
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Collections.shuffle(toShuffle);
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ret = toShuffle.get(0);
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playHistory.add(ret);
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if (playHistory.size() > SHUFFLE_DONT_REPEAT_LAST)
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playHistory.remove();
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return ret;
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}
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@Override
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public void accept(Song t)
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{
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addSong(t);
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}
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}
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